Hi, I have a 1998 1.3 MPi Felicia and am looking for new spark plugs as when started from cold, the revs just die when the accelerator is depressed, almost like it is going to stall, and I havn't changed the spark plugs in around 12 months so think its worth a go.

I've seen NGK offer two types for the 1.3 MPi: 135MPI / 136MPI / MPI FINE ELECTRODE or AMG, AMH, AMJ / MPI MULTI ELECTRODE.

Apart from taking the old plugs out and checking the model number, does anyone know of a quick way to find out which I require?

Cheers,

Andy

These are the best ones for the Felicia:

Skoda Felicia 1.3 Mpi/Fabia 1.4 Spark Plug Set - £12.25 : Skoda, Audi, Seat & VW Parts, Jorily - Probably the UKs largest independent skoda parts supplier

that's a fairly good price for a set of plugs too. i can vouch for jorily, normally the parts turn up next day..

These are the best ones for the Felicia:

Skoda Felicia 1.3 Mpi/Fabia 1.4 Spark Plug Set - £12.25 : Skoda, Audi, Seat & VW Parts, Jorily - Probably the UKs largest independent skoda parts supplier

These aren't better then? Skoda Felicia Bosch Super 4 FR78 Spark Plug Set - £19.99 : Skoda, Audi, Seat & VW Parts, Jorily - Probably the UKs largest independent skoda parts supplier

Is that fault going to be spark plug related anyway?? It sounds more like a fuelling problem, either too much flooding the engine or possible not enough being supplied (by the cold start valve).

Yes, I did think it could well be a fuelling problem, I have been running the petrol tank very low recently and wondered if some dirt from the bottom could have got into the injectors, so I may get some Redex first to try and clean the injectors. I see you can get Redex for

I figure changing the spark plugs every 12 months is probably a good thing to do anyway, but once the engine is running, it never has another problem, its only on start up.

I always run my tank to near empty and change the fuel filter per schedule, that stops any build up of gunk that can cause a problem when you REALLY run the tank empty, which has happened to me once or twice in the past, usually because of a stuck fuel gauge.

Once years ago, the empty light came on and the car conked out 2 seconds later!!!

(An old Audi, not a Skoda)

this sounds awfully familiar! having same prob on my Felicia 136B at the moment. had a petrol shortage a week or so ago, and its been shocking since. usually after breaking from speed, its uber slow on the uptake in 2nd and 3rd til its back up to 40ish. Tried to get to the fuel filter today, but the heatshield nuts/studs are corroded and dont want to snap/ surgically remove the thing to find i cant get it secured again. if it comes to it, can i drill the chassis near the original studs to remount it?

If you do lots of high revs driving ie motorway a slightly colder plug seems to suit this!

I think BKUR5ET10 is standard, ive got BKUR6ET10 a bit colder and also cheaper :S

Havnt had any problems with town driving causing carbon build up.

I'd think it's either fuelling or the cold-start enrichment, rather than the plugs. Is this car new enough to use VCDS on?

Yes, is it possible to run a diagnostics and engine management check, I'll just have to get round to doing it. The more it happens, the more Im thinking it's likely to be a problem with the automatic choke, and not enough fuel getting into the cylinders on start up.

I've also read there can be problems with the speed/crank sensor that can be replaced. I'll have to consult Haynes and see what the easiest fix is first and try that....

Thanks for the help.